from django.core.files.storage import Storage

class MyStorage(Storage):

    def _open(self,name,mode = 'rb'):
        pass

    def _save(self,name,content,max_length = None):
        pass

    def url(self, name):
        #name就是图片的名字
        return 'http://qscvf5wsf.hn-bkt.clouddn.com/' + name